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Odd problem with the 99 Bonneville SE

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Old 09-21-2011, 12:01 PM
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Arrow Odd problem with the 99 Bonneville SE
I think the fuel pump might be slowly dying. It does not start-up as fast as before. The idle is bouncy and rough at first, and then it clears and idles fine. I can hear the fuel pump, however it sounds different. Any ideas???
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Old 09-21-2011, 12:06 PM
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Change sig and check fuel pressure.
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Old 09-21-2011, 12:06 PM
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Check the fuel pressure, should be around 48 psi.
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Old 09-21-2011, 12:27 PM
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Originally Posted by Bonne99
I think the fuel pump might be slowly dying. It does not start-up as fast as before. The idle is bouncy and rough at first, and then it clears and idles fine. I can hear the fuel pump, however it sounds different. Any ideas???
FYI... fuel filter has been change.
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Old 09-21-2011, 12:28 PM
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It is 248,000 miles on it now.
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Old 09-21-2011, 12:57 PM
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I meant the smooth as silk part.
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Old 09-21-2011, 02:01 PM
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*changed. THE VERDICT IS: I am only getting 20 psi. Thus, the pump is heading out the door. Time for a new one.
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Old 09-21-2011, 02:13 PM
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You found your problem, that'* a bit low.
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Old 09-21-2011, 02:20 PM
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Low cost pump

TREPerformance.com

I used one in my Bonne and after 3 years sold it to another guy and it'* still happily working.
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Old 09-21-2011, 04:04 PM
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*there are 248,000 miles on it now. I have bad grammer for some reason today. Where can I get installation instructions?
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